Marketplace
Skills
Skills for Haarness: instructions and scripts an agent picks up when a task calls for them, added with one command.
SLO Architect
Defines SLIs and SLOs, computes error budgets and multi-window burn-rate alerts, and reviews SLO docs for common mistakes.
Observability Designer
Designs metrics, logs and traces coverage, generates Grafana dashboard JSON and trims noisy alert rules.
EU AI Act Specialist
Classifies AI systems under the EU AI Act, plans conformity assessment and lists obligations per provider or deployer role.
Financial Analyst
Analyse company financials: ratio analysis, discounted cash flow value, budget vs actual and forecasts.
Migration Architect
Plans phased system or database migrations, checks schema and API compatibility, and generates rollback runbooks.
LLM Cost Optimizer
Guides cutting LLM API spend through per-feature cost logging, model routing, prompt caching and output caps.
ISO 42001 AIMS Specialist
Runs an ISO/IEC 42001 AI management system gap analysis, builds an AI risk register and plans internal audits.
Code to PRD
Reads a frontend or backend codebase and writes a page-by-page product requirements document with API and enum inventories.
Incident Commander
Runs outage response: classifies severity, rebuilds timelines from event logs and drafts post-incident reviews.
GDPR Compliance Expert
Scans code for personal-data risks, drafts DPIAs and tracks data subject request deadlines under GDPR and German BDSG.
Feature Flags Architect
Plans flag rollouts, documents kill switches and scans a repo for stale feature flags ready for cleanup.
Dependency Auditor
Audits manifests and lockfiles across ecosystems for known-vulnerable versions, licence conflicts and risky upgrades.
Database Designer
Analyzes SQL schemas for normalization and index gaps, then drafts zero-downtime migrations with rollback steps.
Competitive Teardown
Builds competitor scorecards, SWOTs, pricing comparisons and positioning maps from public market signals.
Data Quality Auditor
Profiles CSV datasets, classifies missing values and flags outliers to produce a scored data-quality remediation plan.
Cloud Security Posture
Reviews exported IAM policies, S3 settings and security groups for privilege escalation and public exposure risks.
Changelog Generator
Turns Conventional Commits into Keep a Changelog entries, lints commit messages and suggests the next semver bump.
Accessibility Audit
Scans web front-end code for WCAG 2.2 A/AA issues, checks colour contrast and suggests framework-specific fixes.
App Store Optimization
Researches app keywords, tightens App Store and Play listing metadata, and plans listing A/B tests and launches.
API Design Reviewer
Lints OpenAPI specs, flags breaking changes between versions and grades REST API design before release.
Campaign Analytics
Compares attribution models, finds funnel drop-offs and calculates ROI, ROAS and CAC from campaign data files.
Answer Engine Optimization
Audits pages for signals that get content cited by AI assistants, suggests rewrites and logs observed citations.
Verification Loop
Run a full pre-merge check of build, types, lint, tests and secrets and get a clear ready or not-ready verdict.
MCP Dependency Review
Statically checks MCP config files for mutable package or image references (@latest, ranges, untagged images) without running them.
Safety Guard Modes
Advisory careful, freeze and guard modes: confirm before destructive commands and keep edits inside one directory.
Spring Boot Patterns
Spring Boot service patterns: layered REST APIs, JPA repositories, validation, central errors, caching, async and rate limits.
Regex vs LLM Parsing
Decides between regex and LLM extraction and builds a hybrid parser that sends only low-confidence items to a model.
Laravel Patterns
Laravel app structure: thin controllers with actions, scoped route binding, Eloquent scopes, form requests, queues and caching.
Safe Database Migrations
Zero-downtime migration playbook: expand-contract, concurrent indexes, batched backfills, with Prisma, Drizzle, Django and more.
Kotlin Coroutines and Flow
Structured concurrency, Flow operators, StateFlow and SharedFlow, cancellation and coroutine testing for Android and KMP.
Idiomatic Go Patterns
Idiomatic Go conventions: error wrapping, small interfaces, functional options, package layout, concurrency and linting.
Dart and Flutter Patterns
Flutter patterns for null safety, sealed state, BLoC and Riverpod, GoRouter auth guards, Dio networking and widget tests.
Agent Security Hardening
Hardens agent runtimes: trust-boundary mapping, ID and URL validation, path containment, secret handling and bounded tool output.
Spec-Driven Development
Writes a reviewed spec covering goals, commands, structure, style, tests and boundaries before any plan or code is produced.
Incremental Implementation
Keeps implementation to thin slices that are each built, tested, verified and committed before the next one starts.
Launch Readiness
Walks a release through quality, security, performance and accessibility checks, then plans a staged rollout and rollback.
Source-Driven Development
Checks framework versions, fetches the matching official docs page, and cites it for every framework-specific choice.
Security Hardening
Threat-models a feature, then applies concrete defences for injection, auth, SSRF, secrets, dependencies, privacy and LLM features.
Task Breakdown Planning
Maps dependencies and slices a spec into small, ordered tasks with acceptance checks and checkpoints, saved as a plan file.
Performance Optimization
Measures first, fixes one bottleneck, re-measures against noise, and keeps or reverts each change with a logged result.
Observability Instrumentation
Adds structured logs, RED metrics, traces and symptom-based alerts with runbooks, starting from the questions on-call will ask.
Deprecation And Migration
Plans removal of old systems with incremental consumer migration and zero-downtime expand/contract schema changes.
Intent Interview
Pins down what you actually want by asking single questions with a stated guess and confidence until it can restate your intent.
Idea Refinement
Turns a rough idea into a one-page brief by widening options through several lenses, testing them, and listing what not to build.
Git Workflow And Versioning
Covers atomic commits, short-lived branches, worktrees, pre-commit hygiene, semantic versions, tags and changelogs.
Frontend UI Engineering
Covers component structure, state choices, design-system use and WCAG basics so generated interfaces look hand-built.
Doubt-Driven Review
Puts each risky decision in front of a fresh-context reviewer told to find flaws, then sorts the findings before moving on.
Docs And ADRs
Writes architecture decision records and why-focused docs, matching any existing ADR convention before using its own template.